Make an Histogram with 24 bars

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flashpode 2021-10-19

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回答： Steven Lord 2021-10-19

I have a variable of duration and I want to get an histogram where each bar (24 in total, for each hour) contains the total messages recieved at the same hour

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Answer 1

Cris LaPierre 2021-10-19

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Check out the documentation for histogram. You likely want to use one of these syntaxes.

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Answer 2

Steven Lord 2021-10-19

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在 MATLAB Online 中打开

The histogram function can operate on datetime and duration arrays. Here's an example using datetime; you should be able to adapt it to operate on a duration array.

midnight = datetime('today');

secondsPerDay = seconds(days(1));

s = seconds(randi(secondsPerDay, 1000, 1));

T = midnight + s;

T(1:10) % Show the first few elements of T to show they contain date and time information

ans = 10×1 datetime array

19-Oct-2021 23:42:45 19-Oct-2021 21:59:22 19-Oct-2021 16:31:34 19-Oct-2021 14:18:30 19-Oct-2021 18:25:32 19-Oct-2021 10:08:10 19-Oct-2021 02:45:47 19-Oct-2021 17:54:04 19-Oct-2021 11:18:35 19-Oct-2021 10:02:54

histogram(T, midnight + hours(0:24)) % 1 hour long bins